• 제목/요약/키워드: advancing

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The Cross-Century Construction of the Shanghai International Shipping Center

  • Cao Zhongquan
    • 대한교통학회:학술대회논문집
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    • 대한교통학회 1998년도 Proceedings The 4th International Transport Symposium
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    • pp.71-76
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    • 1998
  • The construction of the Shanghai International Shipping Center is a prerequisite for building Shanghai into an international center of economy, finance and trade. Shanghai has excellent conditions for becoming an international shipping center, and, under the leadership of the national government, Shanghai is advancing towards this goal for the next century.

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Super subtractive process of FPC for small size LCD module

  • See, S.K.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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    • pp.975-977
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    • 2004
  • According to thin and light form-factor and additional function of today's electronic devices, it is required to decrease the pattern pitch of FPC. The high density demand is more and more important trend especially, for small size LCD module. Based on this requirement, the manufacturing process is advancing from subtractive method to super subtractive method.

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대향류 슬롯 버너에서 이중 예혼합 선단화염의 전파특성 (Edge Flame propagation for Twin Premixed Counterflow Slot Burner)

  • 데이비드 클레이튼;차민석;폴 로니
    • 한국연소학회:학술대회논문집
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    • 한국연소학회 2006년도 제33회 KOSCO SYMPOSIUM 논문집
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    • pp.60-64
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    • 2006
  • Propagation rates ($U_{edge}$) of various premixed, twin edge-flames were measured as a function of global strain rate ($\sigma$), mixture strength, and Lewis number (Le). Using a counterflow slot-jet burner with electrical heaters at each end, both advancing (positive $U_{edge}$) and retreating (negative $U_{edge}$) edge-flames can be studied as they propagate along the long dimension of the burner. Experimental results are presented for premixed methane/air twin flames in terms of the effects of $\sigma$ on $U_{edge}$. Both low-$\sigma$ and high-$\sigma$ extinction limits were discovered for all mixtures tested. As a result, the domain of edge-flame stability was obtained in terms of heat loss factor and normalized flame thickness, and comparison with the numerical result of other researchers was also made. For low ($CH_4/O_2/CO_2$) and high ($C_3H_8$/air) Lewis number cases, propagation rates clearly show a strong dependence on Le.

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접촉각측정에 의한 표면의 특성연구 - I. 레이저광선 투영에 의한 접촉각의 측정방법- (Characterization of Surfaces by Contact Angle Goniometry - I. Contact Angle Measurement by Laser Beam Projection-)

  • 박정희
    • 한국의류학회지
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    • 제15권1호
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    • pp.70-75
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    • 1991
  • 본 연구에서는 레이저광선의 투영을 이용한 접촉각측정기구가 개발되었다. 이 새로운 방법은 편평한 표면분만 아니라 직격이 가는 섬유를 포함한 굴곡진 표면에서는 stationary, advancing그리고 receding contact angle-을 신속하고 정확하게 측정할 수 있게 하여 준다. 가는 레이저광선이 액체와 고체사이 계면의 끝을 통과하여 tangent screen의 각도를 재는 눈금상에 중심으로부터 방사상으로 두개의 선이 나타나게 된다. 이때 눈금상에 투영된 두개의 레이저광선 사이의 각도를 접촉각으로 결정한다. 이 새로운 기구를 사용한 결과, PMMA(Perspex-CQ)상에서의 접촉각은 문헌상의 접촉각과 일치함으로써 간편하고 정확한 접촉각 측정법임을 입증할 수 있었다.

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디젤기관에서 바이오디젤 혼합유의 연소특성에 미치는 연료분사시기의 영향 (Effects of Fuel Injection Timing on Combustion Characteristics of Biodiesel Blend Oil in Diesel Engine)

  • 임재근;조상곤
    • 동력기계공학회지
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    • 제16권3호
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    • pp.10-15
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    • 2012
  • Recently we have a growing interest in environmental pollution and alternative energy. Diesel engine is generally used to produce the power on the ground and the sea. However, the combustion characteristics are changed on account of the wear of fuel system and the altered ambient condition of the combustion chamber by the increment of the engine operation hour. Therefore combustion characteristics on fuel injection timing are experimentally investigated to find out the optimum fuel injection timing in the case of the aged diesel engine using biodiesel blend oil. Cylinder pressure, rate of pressure rise, rate of heat release and combustion gas temperature are risen by the advancing fuel injection timing, while the exhaust gas temperature and soot emission level are decreased by the advancing of fuel injection timing. The least specific fuel oil consumption is indicated at BTDC $26^{\circ}$ CA on the 75%load and at 1800rpm.

황련해독탕(黃連解毒湯)이 아토피 피부염에 미치는 영향에 대한 임상적 연구 (A Clinical Study on the Effect of Hwangryunhaedock-tang on Atopic Dermatitis)

  • 고민정;백정한
    • 대한한방소아과학회지
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    • 제26권4호
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    • pp.51-60
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    • 2012
  • Objectives: The purpose of this study is to evaluate the effect of Hwangryunhaedock-tang on Atopic Dermatitis Methods: This study population was 71 pediatric allergic rhinitis patients who had been treated in ${\bigcirc}{\bigcirc}$ hospital. All the patients were asked to answer the questionnaire consisting of 8 questions about symptoms of atopic dermatitis. Results: 1. The total scores from the same questionnaire about atopic dermatitis symptoms were significantly improved after the treatment compared to the scores before the treatment. 2. The score about papule/induration/edema, effusion/furuncle, and subjective symptoms at night were significantly improved in all groups after the treatment compared to the scores before the treatment. 3. The effect of Hwangryunhaedock-tang increase markedly with advancing age. The effect of Hwangryunhaedocktang increases markedly with advancing age. Conclusions Traditional Korean herbal medication; Hwangryunhaedock-tang is effective in treating pediatric atopic dermatitis.

비압축성 점성 유동의 수치적 해석을 위한 사각형-삼각형 혼합 격자계 (Quadrilateral-Triangular Mixed Grid System for Numerical Analysis of Incompressible Viscous Flow)

  • 심은보;박종천;류하상
    • 한국CDE학회논문집
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    • 제1권1호
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    • pp.56-64
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    • 1996
  • A quadrilateral-triangular mixed grid method for the solution of incompressible viscous flow is presented. The solution domain near the body surface is meshed using elliptic grid geneator to acculately simulate the viscous flow. On the other hand, we used unstructured triangular grid system generated by advancing front technique of a simple automatic grid generation algorithm in the rest of the computational domain. The present method thus is capable of not only handling complex geometries but providing accurate solutions near body surface. The numerical technique adopted here is PISO type finite element method which was developed by the present author. Investigations have been made of two-dimensional unsteady flow of Re=550 past a circular cylinder. In the case of use of the unstructured grid only, there exists a considerable amount of difference with the existing results in drag coefficient and vorticity at the cylinder surface; this may be because of the lack of the grid clustering to the surface that is a inevitable requirement to resolve the viscous flow. However, numerical results on the mixed grid show good agreements with the earlier computations and experimental data.

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CALS의 추진현황 및 발전방안에 관한 연구 (A Study on the Advancing Status and Suggestions for the Development of CALS)

  • 신호균;강해중
    • 한국정보시스템학회지:정보시스템연구
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    • 제9권1호
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    • pp.61-86
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    • 2000
  • CALS(Commerce At Light Speed) which originated in the early 1980's in the military sector is now an integral component in our global strategy to further heighten competitiveness. Through integration and streamlining of production, distribution, technical information and management, CALS will certainly lead the world out of these economically challenging times and into new global prosperity. However, not much effort have been focused on the development and diffusion issues of component technologies such as ERP/SCM(Enterprise Resourses Planning/supply Chain Management), PDM(Product Data Management), and BPR(Business Process Reengineering) related with the CALS in electronic industry. Therefore, the purpose of this study is to analyze the advancing status and to present suggestions for the development of the CALS in electronic industry. In order to achieve the purpose, the case study has been conducted using the questionaries on the end-users and the interviews on the managers in the CALS area. The case study cover 57 users of the CALS for the three outstanding electronics(L, S, and D Electronics) in Korea. The questionaries include five success measures and eleven diffusion factors for the component technologies such as ERP/SCM, PDM, and BPR. In summary, the CALS will serve as the bases for exciting corporated innovations and the common business framework which facilitates the realization of Virtual Enterprise and Electronic Commerce in the 21st century.

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4차산업혁명의 인문 디지털 콘텐츠에 대한 연구 (Humanities Digital Contents of The Fourth Industrial Revolution)

  • 최현주;이준하
    • 디지털콘텐츠학회 논문지
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    • 제19권6호
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    • pp.1097-1103
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    • 2018
  • 본 연구는 인문학과 ICT의 융합적 접근을 통하여 인문 디지털 콘텐츠를 현대인의 삶에 직접적으로 활용할 수 있는 방안을 마련하는 데 목표를 두었다. 중국문화콘텐츠원형을 기반으로 대중화권 창업진출이 가능한 콘텐츠를 발굴하여 만화, 애니메이션 측면의 콘텐츠를 제작하는 콘텐츠 개발과 활용방안을 제시하였다. 또한 ICT 기반의 스마트폰 앱 퍼블리싱 환경 연구 및 모바일 빅데이터 생태환경 연구를 통해 구체적인 ICT 창업아이템 개발을 지원하는 대중화권 진출을 위한 통합형 창업 DB 및 보육 멘토링 프로그램 제공이 가능할 것이다.

Triticale의 사료성분과 in vitro 건물소화율에 미치는 생육시기의 촬영 (Effects of Maturing Stages on Chemical Composition for Feed and in vitro Dry Matter Digestibility of Triticale)

  • 윤승길
    • 한국초지조사료학회지
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    • 제20권3호
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    • pp.227-232
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    • 2000
  • Triticale을 사료로서의 특성을 알기 위하여 밀(북견 66호, 월한1호, 치오쿠코무기), 호밀(Amilo, W Warko, Mardar), triticale(Moniko, Presto, Tewo)을 출수기, 유숙기, 호숙기, 황숙기에 수확하여, 건물 수량, 사료성분 및 IVDMD을 조사했다. 1. 재료의 건물수량은 어느 초종도 생육에 따라 증가했고, triticale은 다른 2종의 초종보다 수량성이 우수했다. 2. triticale의 사료성분은 대부분 멸과 호밀의 중간에 위치했다. 3. triticale과 호멸의 IVDMD는 출수기부터 호숙기까지 저하하고, 성숙기에 향상한 것에 반해 밀은 생육에 따라 저하했다. triticale의 IVDMD는 출수기와 성숙기에서 가장 높았고, 유숙기와 호숙기에서는 밀이 높았고, 호밀은 출수기를 제외한 모든 시기에서 최저였다.

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